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Old Senate Chamber designed by Benjamin Henry Latrobe, this room was home to the U.S. Senate from 1819 until 1859 and later to the U.S. Supreme Court from 1860-1935.
Located north of the Capitol Rotunda is the richly decorated Old Senate...

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Photo of Stephen T. Ayers, FAIA, LEED AP, Architect of the Capitol in front of the Capitol Building
On February 24, 2010, President Barack Obama nominated Mr. Ayers to serve as...

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Beth Burrous, Biochemist and USBG Volunteers having a discussion inside a greenhouse
Learn about the science behind the headlines and food labels at the U.S Botanic...

Explore Capitol Hill

Ionic Columns

The sun shining on the Ionic Columns on the Longworth House Office Building.
Overview 

The Ionic column is typically identified by its capital, which includes large paired spiral scrolls, or volutes. It has the tallest base of the three classic Greek orders. Columns in this style can be found throughout Capitol Hill, including the U.S. Capitol, the Supreme Court Building and the exterior of the Longworth House Office Building.

The Old Senate Chamber, located in the U.S. Capitol Building, is a two-story room modeled after the amphitheaters of antiquity. Eight Ionic columns of variegated marble quarried along the Potomac River support the Chamber’s gallery on the east wall; they were inspired by the columns of the Erechtheion in Athens.

The Supreme Court Building’s grand Court Chamber is a dignified room lighted by side windows behind screens of Ionic columns. The 24 columns are made of Old Convent Quarry Siena marble from Liguria, Italy.

The Longworth House Office Building is one of Washington’s best examples of the Neo-Classical Revival architecture. Its exterior features Ionic columns that support a well-proportioned entablature and are used for the building's five porticoes, the principal one of which is topped by a pediment.